/* ------------------------------------------------------------------ */
/* Tokens de la app: alias sobre tokens.css (identidad Mif)              */
/* ------------------------------------------------------------------ */
:root {
  --dur-fast: 120ms; --dur-slow: 260ms; --ease-out: cubic-bezier(0.2, 0, 0, 1);
  --bg: var(--color-canvas);
  --surface: var(--color-surface);
  --surface-2: #EAEAEA;   /* banda neutra, como las secciones alternas de mifsistemas.ar */
  --ink: var(--color-ink);
  --ink-2: var(--color-ink-2);
  --ink-3: var(--color-ink-3);
  --line: var(--color-line);
  --line-2: var(--color-line-strong);
  --primary: var(--color-primary);
  --primary-hover: var(--color-primary-hover);
  --primary-ink: var(--color-on-primary);
  --primary-soft: var(--color-primary-soft);
  --accent: var(--color-accent);
  --accent-soft: #FDEBE0;
  --brand-green: var(--color-brand-green);
  --aws: #FF9900;
  --azure: #0078D4;
  --mikrotik: #55637A;
  --comptia: #55637A;
  --isc2: #55637A;       /* ISC2 usa un azul oscuro; como texto se toma ink-2 para cumplir contraste */    /* la marca es rojo #C8102E, pero como color de texto chocaría con el semántico danger: el rojo queda en el logo-box */
  --ok: var(--color-success);
  --ok-soft: var(--color-success-soft);
  --warn: var(--color-warning);
  --warn-soft: var(--color-warning-soft);
  --bad: var(--color-danger);
  --bad-soft: var(--color-danger-soft);
  --shadow: var(--shadow-1);
  --shadow-lg: var(--shadow-2);
  --radius: var(--radius-md);
  --radius-sm: var(--radius-sm);
  --radius-lg: var(--radius-lg);
  --font: var(--font-sans);
  --mono: var(--font-mono);
  color-scheme: light;
}
/* Tema oscuro: escala NEUTRA (la banda oscura de mifsistemas.ar es #1F1F1F, no azul marino).
   Medido: ink/bg 15.54:1 · ink/surface 13.85 · ink-2 8.27 · primary 6.55 · ok 7.67 · warn 8.40 · bad 6.50 */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1A1A1B; --surface: #242426; --surface-2: #2E2E31; --ink: #F2F2F3; --ink-2: #BDBDC0; --ink-3: #8E8E93;
    --line: rgba(255,255,255,.10); --line-2: rgba(255,255,255,.32); --primary: #9AA3F0; --primary-hover: #B3BAF4; --primary-ink: #1A1A1B;
    --primary-soft: rgba(154,163,240,.18); --accent: #F79B6B; --accent-soft: rgba(247,155,107,.16);
    --ok: #5FCB8A; --ok-soft: rgba(95,203,138,.16); --warn: #F0B45A; --warn-soft: rgba(240,180,90,.16);
    --bad: #F28B85; --bad-soft: rgba(242,139,133,.16); --shadow: 0 1px 2px rgba(0,0,0,.4); --shadow-lg: 0 8px 24px rgba(0,0,0,.35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #1A1A1B; --surface: #242426; --surface-2: #2E2E31; --ink: #F2F2F3; --ink-2: #BDBDC0; --ink-3: #8E8E93;
  --line: rgba(255,255,255,.10); --line-2: rgba(255,255,255,.32); --primary: #9AA3F0; --primary-hover: #B3BAF4; --primary-ink: #1A1A1B;
  --primary-soft: rgba(154,163,240,.18); --accent: #F79B6B; --accent-soft: rgba(247,155,107,.16);
  --ok: #5FCB8A; --ok-soft: rgba(95,203,138,.16); --warn: #F0B45A; --warn-soft: rgba(240,180,90,.16);
  --bad: #F28B85; --bad-soft: rgba(242,139,133,.16); --shadow: 0 1px 2px rgba(0,0,0,.4); --shadow-lg: 0 8px 24px rgba(0,0,0,.35);
  color-scheme: dark;
}

/* ------------------------------------------------------------------ */
/* Base                                                                */
/* ------------------------------------------------------------------ */
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; font: 16px/1.55 var(--font); color: var(--ink); background: var(--bg); -webkit-font-smoothing: antialiased; font-variant-numeric: lining-nums; font-feature-settings: "lnum" 1; } /* el shorthand font resetea font-variant: Raleway usa cifras antiguas */
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { line-height: 1.2; margin: 0 0 .5rem; letter-spacing: -0.01em; }
h1 { font-size: clamp(1.75rem, 3vw, 2.5rem); font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: clamp(1.35rem, 2.2vw, 1.75rem); font-weight: 700; }
h3 { font-size: 1.15rem; font-weight: 700; }
p { margin: 0 0 .75rem; }
.muted { color: var(--ink-3); }
.small { font-size: .875rem; }
.container { width: min(1120px, 100% - 2rem); margin: 0 auto; }
.narrow { max-width: 780px; margin-inline: auto; }
.page { padding: 5.5rem 0 4rem; min-height: 60vh; }
.skip { position: absolute; left: -999px; top: 0; background: var(--surface); padding: .5rem 1rem; z-index: 100; }
.skip:focus { left: 1rem; top: 1rem; }
.stack > * + * { margin-top: 1rem; }
.stack-lg > * + * { margin-top: 2rem; }
.row { display: flex; flex-wrap: wrap; gap: .75rem; align-items: center; }
.between { justify-content: space-between; }
.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.tabular { font-variant-numeric: tabular-nums; }
.hidden, [hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* ------------------------------------------------------------------ */
/* Header / footer                                                     */
/* ------------------------------------------------------------------ */
.site-header { position: fixed; inset: 0 0 auto 0; z-index: 50; background: color-mix(in srgb, var(--bg) 85%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--line); }
.site-header .container { display: flex; align-items: center; justify-content: space-between; gap: 1rem; height: 64px; }
.brand { display: flex; align-items: center; gap: .6rem; font-weight: 800; color: var(--ink); font-size: 1.05rem; }
.brand:hover { text-decoration: none; }
.brand-logo { height: 30px; width: auto; display: block; }
.brand .txt { font-weight: 600; color: var(--ink-2); font-size: .95rem; padding-left: .6rem; border-left: 1px solid var(--line-2); }
.nav { display: flex; gap: .25rem; align-items: center; }
.nav a { color: var(--ink-2); font-weight: 600; font-size: .92rem; padding: .45rem .7rem; border-radius: 8px; }
.nav a:hover, .nav a[aria-current="page"] { background: var(--surface-2); color: var(--ink); text-decoration: none; }
.icon-btn { width: 38px; height: 38px; border-radius: 10px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; font-size: 1rem; display: grid; place-items: center; }
.icon-btn:hover { border-color: var(--line-2); }
@media (max-width: 640px) { .nav a { padding: .4rem .5rem; font-size: .85rem; } .brand span.txt { display: none; } }

.site-footer { border-top: 1px solid var(--line); background: var(--surface); margin-top: 3rem; }
.site-footer .container { padding: 2.5rem 0; display: grid; gap: 2rem; grid-template-columns: 2fr 1fr 1fr; }
.site-footer h4 { font-size: .85rem; font-weight: 700; color: var(--ink); margin-bottom: .75rem; }
.site-footer ul { list-style: none; padding: 0; margin: 0; display: grid; gap: .35rem; }
.site-footer a { color: var(--ink-2); }
.footer-bottom { border-top: 1px solid var(--line); padding: 1rem 0; font-size: .82rem; color: var(--ink-3); }
.footer-bottom .container { display: flex; flex-wrap: wrap; gap: 1rem; justify-content: space-between; padding: 0; }
@media (max-width: 760px) { .site-footer .container { grid-template-columns: 1fr; } }

/* ------------------------------------------------------------------ */
/* Components                                                          */
/* ------------------------------------------------------------------ */
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); }
.card-link { display: block; color: inherit; transition: border-color var(--dur-fast); }
.card-link:hover { text-decoration: none; border-color: var(--primary); }
.eyebrow { font-size: .8rem; font-weight: 600; color: var(--ink-2); }
.eyebrow .aws { color: var(--aws); }
.eyebrow .mikrotik { color: var(--mikrotik); }
.eyebrow .comptia { color: var(--comptia); }
.eyebrow .isc2 { color: var(--isc2); }
.eyebrow .azure { color: var(--azure); }
.badge { display: inline-flex; align-items: center; gap: .3rem; padding: .18rem .6rem; border-radius: var(--radius-sm); font-size: .78rem; font-weight: 600; border: 1px solid var(--line); background: var(--surface-2); color: var(--ink-2); white-space: nowrap; }
.badge-ok { background: var(--ok-soft); color: var(--ok); border-color: transparent; }
.badge-warn { background: var(--warn-soft); color: var(--warn); border-color: transparent; }
.badge-bad { background: var(--bad-soft); color: var(--bad); border-color: transparent; }
.badge-primary { background: var(--primary-soft); color: var(--primary); border-color: transparent; }
.badge-accent { background: var(--accent-soft); color: var(--accent); border-color: transparent; }
/* Dominios: sin arcoíris. Los cuatro colores anteriores (azul/verde/naranja/violeta sobre su propio
   tinte al 15 %) medían 2,19:1 a 3,30:1, por debajo del 4,5:1 que pide WCAG para texto chico; y el
   color no significaba nada: el prefijo "D1 ·" ya identifica el dominio. Serie neutra + rampa primary. */
.badge-d0, .badge-d1, .badge-d2, .badge-d3, .badge-d4 { background: var(--surface-2); color: var(--ink-2); border-color: var(--line); padding-left: .8rem; }
.badge-d0 { box-shadow: inset 3px 0 0 var(--primary); }
.badge-d1 { box-shadow: inset 3px 0 0 color-mix(in srgb, var(--primary) 75%, var(--ink-3)); }
.badge-d2 { box-shadow: inset 3px 0 0 color-mix(in srgb, var(--primary) 50%, var(--ink-3)); }
.badge-d3 { box-shadow: inset 3px 0 0 color-mix(in srgb, var(--primary) 25%, var(--ink-3)); }
.badge-d4 { box-shadow: inset 3px 0 0 var(--ink-3); }

.btn { display: inline-flex; align-items: center; justify-content: center; gap: .45rem; padding: .65rem 1.1rem; border-radius: var(--radius-sm); border: 1px solid var(--line-2); background: var(--surface); color: var(--ink); font: inherit; font-weight: 700; font-size: .92rem; cursor: pointer; transition: background .15s, border-color .15s, transform .05s; text-decoration: none; }
.btn:hover { background: var(--surface-2); text-decoration: none; }
.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn-primary { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-accent { background: var(--primary); color: var(--primary-ink); border-color: var(--primary); }
.btn-accent:hover { background: var(--primary-hover); border-color: var(--primary-hover); }
.btn-danger { color: var(--bad); border-color: var(--bad); }
.btn-ghost { border-color: transparent; background: transparent; }
.btn-sm { padding: .4rem .75rem; font-size: .82rem; }
.btn-block { width: 100%; }

.field { display: grid; gap: .3rem; }
.field label { font-size: .85rem; font-weight: 600; color: var(--ink); }
select, input[type="text"] { font: inherit; padding: .55rem .7rem; border-radius: 9px; border: 1px solid var(--line-2); background: var(--surface); color: var(--ink); min-width: 0; }
.filters { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: .75rem; }

.seg { display: inline-flex; border: 1px solid var(--line-2); border-radius: 10px; overflow: hidden; background: var(--surface); }
.seg button { font: inherit; font-weight: 700; font-size: .85rem; padding: .45rem .9rem; border: 0; background: transparent; color: var(--ink-2); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--primary); color: var(--primary-ink); }

.stat { padding: 1rem; border-radius: var(--radius-sm); background: var(--surface-2); border: 1px solid var(--line); }
.stat .label { font-size: .8rem; color: var(--ink-2); font-weight: 600; }
.stat .value { font-size: 1.5rem; font-weight: 800; margin-top: .15rem; }
.stat.hl { background: var(--primary-soft); border-color: transparent; }

.bar { height: 8px; background: var(--surface-2); border: 1px solid var(--line); border-radius: 999px; overflow: hidden; }
.bar > span { display: block; height: 100%; background: var(--primary); border-radius: 999px; transition: width .5s; }
.bar.ok > span { background: var(--ok); } .bar.warn > span { background: var(--warn); } .bar.bad > span { background: var(--bad); }

.alert { padding: .8rem 1rem; border-radius: var(--radius-sm); border: 1px solid; font-size: .92rem; }
.alert-info { background: var(--primary-soft); border-color: transparent; color: var(--ink); }
.alert-warn { background: var(--warn-soft); border-color: transparent; }
.alert-bad { background: var(--bad-soft); border-color: transparent; color: var(--bad); }
.alert-ok { background: var(--ok-soft); border-color: transparent; }

.hero { padding: 1.5rem 0 1rem; }
.hero p.lead { font-size: 1.1rem; color: var(--ink-2); max-width: 720px; }
.hero-exam { display: grid; grid-template-columns: auto 1fr; gap: 1.25rem; align-items: start; }
.logo-box { width: 72px; height: 72px; border-radius: 16px; display: grid; place-items: center; font-weight: 900; font-size: .8rem; color: #fff; }
.logo-box.aws { background: #232F3E; color: #FF9900; }
.logo-box.azure { background: #0078D4; }
.logo-box.mikrotik { background: #293239; color: #FFFFFF; }
.logo-box.comptia { background: #C8102E; color: #FFFFFF; }   /* rojo CompTIA, solo en el recuadro del logo */
.logo-box.isc2 { background: #00263A; color: #FFFFFF; }      /* azul ISC2, solo en el recuadro del logo */
@media (max-width: 560px) { .hero-exam { grid-template-columns: 1fr; } }

.list-arrow { display: grid; gap: .6rem; }
.list-arrow a { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: 1rem 1.1rem; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-sm); color: inherit; }
.list-arrow a:hover { border-color: var(--primary); text-decoration: none; }
.list-arrow .arrow { font-size: 1.3rem; color: var(--primary); }

/* ------------------------------------------------------------------ */
/* Questions                                                           */
/* ------------------------------------------------------------------ */
.q { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.25rem; box-shadow: var(--shadow); }
.q-head { display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; margin-bottom: .75rem; }
.q-num { font-weight: 800; color: var(--ink-3); font-size: .85rem; }
.q-prompt { font-size: 1.125rem; line-height: 1.55; font-weight: 600; margin-bottom: 1rem; white-space: pre-line; max-width: 70ch; }
.q-hint { font-size: .8rem; color: var(--ink-3); margin: -.5rem 0 .75rem; }
.opts { display: grid; gap: .5rem; margin: 0; padding: 0; list-style: none; }
.opt { display: flex; gap: .75rem; align-items: flex-start; min-height: 48px; padding: .75rem .9rem; border: 1px solid var(--line-2); border-radius: var(--radius-md); cursor: pointer; background: var(--surface); transition: border-color .12s, background .12s; }
.opt:hover { border-color: var(--primary); }
.opt input { margin-top: .25rem; accent-color: var(--primary); flex: none; }
.opt .key { font-weight: 800; color: var(--ink-3); flex: none; width: 1.2rem; }
.opt.selected { border-color: var(--primary); background: var(--primary-soft); }
.opt.correct { border-color: var(--ok); background: var(--ok-soft); }
.opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.opt.missed { border-style: dashed; border-color: var(--ok); }
.opt:has(input:disabled) { cursor: default; }
.explain { margin-top: 1rem; padding: 1rem; border-radius: var(--radius-sm); background: var(--surface-2); border-left: 4px solid var(--primary); font-size: .95rem; }
.explain strong { display: block; margin-bottom: .25rem; }
.q-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; align-items: center; }
.q-result-tag { margin-left: auto; }

/* ------------------------------------------------------------------ */
/* Exam runner                                                         */
/* ------------------------------------------------------------------ */
.exam-bar { position: sticky; top: 64px; z-index: 20; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-md); padding: .6rem .9rem; display: flex; flex-wrap: wrap; gap: .6rem 1rem; align-items: center; justify-content: space-between; box-shadow: var(--shadow); }
.timer { font-family: var(--mono); font-weight: 700; font-size: 1.25rem; font-variant-numeric: tabular-nums; color: var(--ink); }
.timer.warn { color: var(--warn); }
.timer.danger { color: var(--bad); }
.timer.hidden-time { color: var(--ink-3); font-family: var(--font); font-size: .9rem; font-weight: 600; }
.net-banner { padding: .6rem 1rem; border-radius: var(--radius-sm); font-size: .9rem; display: flex; gap: .6rem; align-items: center; }
.net-banner.offline { background: var(--warn-soft); color: var(--ink); border: 1px solid var(--warn); }
.net-banner.online { background: var(--ok-soft); color: var(--ink); border: 1px solid var(--ok); }
.exam-layout { display: grid; grid-template-columns: 1fr 280px; gap: 1.25rem; align-items: start; }
@media (max-width: 900px) { .exam-layout { grid-template-columns: 1fr; } .navigator-panel { order: -1; } }
.navigator { display: grid; grid-template-columns: repeat(auto-fill, minmax(38px, 1fr)); gap: .35rem; }
.navigator button { font: inherit; font-size: .8rem; font-weight: 600; height: 36px; border-radius: var(--radius-sm); border: 1px solid var(--line-2); background: var(--surface); color: var(--ink-2); cursor: pointer; position: relative; }
.navigator button.answered { background: var(--primary-soft); border-color: var(--primary); color: var(--ink); }
.navigator button.marked::after { content: ""; position: absolute; top: 0; right: 0; border-style: solid; border-width: 0 12px 12px 0; border-color: transparent var(--accent) transparent transparent; border-radius: 0 6px 0 0; }
.navigator button.current { outline: 2px solid var(--primary); outline-offset: 1px; }
.navigator button.correct { background: var(--ok-soft); border-color: var(--ok); }
.navigator button.wrong { background: var(--bad-soft); border-color: var(--bad); }
.navigator button.unanswered { background: var(--warn-soft); border-color: var(--warn); }
.legend { display: flex; flex-wrap: wrap; gap: .5rem .9rem; font-size: .78rem; color: var(--ink-3); margin-top: .75rem; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 3px; margin-right: .3rem; vertical-align: middle; }

.score-hero { text-align: center; padding: 2rem 1rem; }
.score-hero .score { font-size: 3rem; font-weight: 700; line-height: 1; font-variant-numeric: tabular-nums; }
.score-hero .seal { display: inline-grid; place-items: center; width: 96px; height: 96px; border-radius: 50%; border: 6px solid var(--brand-green); margin-bottom: .75rem; font-size: 2rem; }
.score-hero .seal.fail { border-color: var(--line-2); }
@media (prefers-reduced-motion: no-preference) { .score-hero .score { animation: reveal var(--dur-slow) var(--ease-out) both; } @keyframes reveal { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } } }
.score-hero .verdict { font-size: 1.2rem; font-weight: 800; margin-top: .5rem; }

.attempt-row { display: grid; grid-template-columns: auto 1fr auto; gap: 1rem; align-items: center; padding: .9rem 1rem; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); }
.attempt-row .score-pill { font-weight: 900; font-size: 1.15rem; min-width: 3.5rem; text-align: center; }
@media (max-width: 560px) { .attempt-row { grid-template-columns: 1fr; } }

.modal-backdrop { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: grid; place-items: center; z-index: 90; padding: 1rem; }
.modal { background: var(--surface); border-radius: var(--radius); padding: 1.5rem; max-width: 480px; width: 100%; box-shadow: var(--shadow); }

.chips { display: flex; flex-wrap: wrap; gap: .4rem; }
.chip { font: inherit; font-size: .8rem; font-weight: 700; padding: .35rem .75rem; border-radius: 999px; border: 1px solid var(--line-2); background: var(--surface); color: var(--ink-2); cursor: pointer; }
.chip[aria-pressed="true"] { background: var(--ink); color: var(--bg); border-color: var(--ink); }

.kbd { font-family: var(--mono); font-size: .78rem; padding: .1rem .4rem; border: 1px solid var(--line-2); border-radius: 5px; background: var(--surface-2); }
.steps { counter-reset: s; list-style: none; padding: 0; margin: 0; display: grid; gap: .75rem; }
.steps li { counter-increment: s; display: grid; grid-template-columns: 2rem 1fr; gap: .75rem; align-items: start; }
.steps li::before { content: counter(s); width: 2rem; height: 2rem; border-radius: 50%; background: var(--primary-soft); color: var(--primary); font-weight: 800; display: grid; place-items: center; }

/* Vista de skills oficiales */
.skill-list { list-style: none; margin: 0; padding: 0; }
.skill-list > li + li { border-top: 1px solid var(--line); }
.skill-row { display: grid; grid-template-columns: 3.2rem 1fr auto; gap: .25rem .8rem; align-items: baseline;
  padding: .6rem .4rem; border-radius: var(--radius-sm); color: inherit; text-decoration: none; min-height: 40px; }
.skill-row:hover { background: var(--primary-soft); }
.skill-row:focus-visible { outline: 2px solid var(--primary); outline-offset: -2px; }
.skill-id { font-weight: 700; color: var(--primary); }
.skill-text { color: var(--ink); }
.skill-n { font-size: .85rem; color: var(--ink-2); white-space: nowrap; }
@media (max-width: 560px) {
  .skill-row { grid-template-columns: 3.2rem 1fr; }
  .skill-n { grid-column: 2; }
}

/* Hub: datos del examen en una línea y bloque de plan */
.exam-facts { font-size: .95rem; color: var(--ink); margin: 0; }
.plan { border-left: 3px solid var(--primary); }
.plan .plan-title { font-size: 1.25rem; margin: .2rem 0 .4rem; }
.plan-actions { margin-top: 1rem; gap: .6rem; flex-wrap: wrap; }
.card-compact { padding: 1rem; }
.card-compact h3 { font-size: 1rem; margin: 0 0 .3rem; }

/* Notas al pie de la ficha: formato del examen, examen hermano (A+ Core 1 / Core 2) */
.stack-lg > .nota-examen { margin-top: .6rem; }
.nota-examen { padding-left: .8rem; color: var(--ink-2); box-shadow: inset 3px 0 0 var(--line-2); } /* dato necesario, no metadato: ink-2, no muted */